We examine the supernova remnant ( SNR ) 0540 - 697 in the Large Magellanic Cloud ( LMC ) using data from the Chandra ACIS .
The X-ray emission from this SNR had previously been hidden in the bright emission of nearby X-ray binary LMC X-1 ; however , new observations with Chandra can finally reveal the SNR ’ s structure and spectrum .
We find the SNR to be a thick-shelled structure about 19 pc in diameter , with a brightened northeast region .
Spectral results suggest a temperature of 0.31 keV and an X-ray luminosity ( 0.3-3.0 keV ) of 8.4 \times 10 ^ { 33 } erg s ^ { -1 } .
We estimate an age of 12,000-20,000 yr for this SNR , but note that this estimate does not take into account the possibility of cavity expansion or other environmental effects .